What time is it in Paraguay and Argentina? The confusion is over

Quick answer: Paraguay and Argentina now share the same time zone: GMT-3, permanent, with no daylight saving time. As of late 2024, a Paraguayan law established this official time, eliminating the previous confusion. Foz do Iguaçu, Ciudad del Este, and Puerto Iguazú now operate on identical time year-round, with no clock adjustments when crossing borders.

For decades, the question "what time is it in Paraguay?" confused everyone at the border: Paraguay switched to daylight saving time on different dates than Brazil, and the 1-hour difference came and went throughout the year.

That's over. In late 2024, a law passed by the Paraguayan Congress set the country's official time to the GMT-3 zone, the same as Brasília and Buenos Aires, permanent, with no daylight saving time.

In practice:

• Foz do Iguaçu (BR), Ciudad del Este (PY), and Puerto Iguazú (AR): the same time, all year
• No clock adjustment when crossing any of the bridges
• Hours for shops, buses, and tours are the same on all three sides

Why do some sites still say otherwise? A lot of old content online still explains the previous rule (Paraguay GMT-4 with daylight saving time). If a guide or blog mentions a "1-hour difference," it's outdated.

Source: H2FOZ, Paraguay's time zone · Paraguayan law of 2024